NFL notebook: 49ers end accused of domestic violence

Police in Northern California say San Francisco 49ers defensive end Ray McDonald has been arrested on domestic violence charges. San Jose police Sgt. Heather Randol says the 29-year-old was taken into custody early Sunday after officers responded to a home in an upscale neighborhood.

San Francisco 49ers general manager Trent Baalke said in a statement Sunday that the team takes “such matters” seriously but isn't commenting on the allegations involving McDonald without more information.

Sam clears waivers: Michael Sam probably was never an ideal fit with the Rams, and it had nothing to do with his sexual orientation. They're just too well-stocked at defensive end, Sam's position.

Sam showed up for his face-to-face exit meeting with coach Jeff Fisher, a few hours after clearing waivers. Sam was outplayed in the preseason by Ethan Westbrooks, the Rams' top target when signing undrafted free agents.

Westbrooks was the Division II defensive player of the year when he had 191/2 sacks for West Texas A&M.

QB gets extension: Chiefs quarterback Alex Smith agreed to a four-year, $68 million extension that includes $45 million in guaranteed money, a person familiar with the contract told the Associated Press.